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Originally Posted by Ilow
I don't think that the fan on either the red or blue is a big drag, but running the compressor etc. for the AC is what chews up milage. I have heard from several sources that only about 30-60 seconds of idling to warm up the car is OK as long as it is driven relatively gently until it is fully warm. That sounds a little low to me, but who knows. If it's in the single digits or below I start it awhile before I get in anyway so I don't freeze my ass!  |
on a modern engine, just start it and go. Warming it up actually hurts it more because when you put the engine under load it does a better job of getting the oil to the top of the head. Drive gently until a few minutes after the temp gauge reaches normal.